/* ==========================================================================
   微胞子虫（Microsporidium）角結膜炎 報告書 ― Webサイト用スタイル
   ========================================================================== */

:root {
  --blue-900: #14233a;
  --blue-800: #1f3550;
  --blue-700: #1f4e79;
  --blue-500: #2f5f8a;
  --blue-300: #5b8fb9;
  --blue-100: #eef3f8;
  --blue-050: #f1f5fa;
  --blue-line: #d3e0ec;

  --green-800: #14332e;
  --green-700: #155b52;
  --green-500: #277164;
  --green-300: #5fa99c;
  --green-100: #e8f3f1;

  --ink-900: #14181d;
  --ink-700: #1c1f24;
  --ink-500: #444b53;
  --ink-300: #5a626c;
  --ink-100: #8b929a;

  --paper: #fdfdfc;
  --paper-alt: #f6f8fa;
  --border: #dfe4ea;

  --gold-line: #b8923b;
  --gold-bg: #fbf7ee;
  --gold-ink: #8a6d24;

  --amber-line: #c08a26;
  --amber-bg: #fff7e8;
  --amber-ink: #6f4e0c;

  --red-line: #b03b3b;
  --red-bg: #fdeeee;
  --red-ink: #8a2424;

  --t1-bg: #d9efe9;
  --t2-bg: #fdf2dc;
  --t3-bg: #fbe6e6;

  --radius: 6px;
  --maxw: 880px;
  --sidebar-w: 288px;
  --header-h: 60px;

  --font-sans: "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic",
    system-ui, -apple-system, sans-serif;
  --font-serif: "Noto Serif JP", "Hiragino Mincho ProN", "Yu Mincho", serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 12px); }

body {
  margin: 0;
  font-family: var(--font-serif);
  color: var(--ink-700);
  background: var(--paper-alt);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

p { margin: 0 0 0.9em 0; }
ul, ol { margin: 0.4em 0 0.9em 0; padding-left: 1.4em; }
li { margin-bottom: 0.35em; }
a { color: var(--blue-700); }
img { max-width: 100%; height: auto; display: block; }

/* ---------- Skip link ---------- */
.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--blue-700);
  color: #fff;
  padding: 10px 16px;
  z-index: 1000;
  border-radius: 0 0 6px 0;
}
.skip-link:focus { left: 0; }

/* ---------- Top header / nav bar ---------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  background: var(--blue-900);
  color: #fff;
  z-index: 200;
  box-shadow: 0 1px 6px rgba(0,0,0,0.18);
}
.site-header .brand {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.02em;
  display: flex;
  flex-direction: column;
  line-height: 1.25;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.site-header .brand small {
  font-weight: 400;
  font-size: 0.7rem;
  color: #b9c6d6;
}
.nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid rgba(255,255,255,0.35);
  color: #fff;
  border-radius: 4px;
  width: 40px;
  height: 40px;
  font-size: 1.2rem;
  cursor: pointer;
  flex: none;
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}
.lang-switch {
  display: inline-flex;
  border: 1px solid rgba(255,255,255,0.32);
  border-radius: 5px;
  overflow: hidden;
  flex: none;
}
.lang-btn {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 500;
  color: #c7d4e2;
  padding: 6px 11px;
  text-decoration: none;
  line-height: 1.2;
  white-space: nowrap;
  transition: background 0.15s ease, color 0.15s ease;
}
.lang-btn:hover { background: rgba(255,255,255,0.12); color: #fff; }
.lang-btn.active {
  background: rgba(255,255,255,0.18);
  color: #fff;
  font-weight: 700;
  cursor: default;
}
.lang-btn + .lang-btn { border-left: 1px solid rgba(255,255,255,0.25); }
.print-btn {
  font-family: var(--font-sans);
  font-size: 0.78rem;
  color: #fff;
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.3);
  border-radius: 4px;
  padding: 7px 12px;
  cursor: pointer;
  white-space: nowrap;
}
.print-btn:hover { background: rgba(255,255,255,0.22); }

/* ---------- Layout shell ---------- */
.layout {
  display: flex;
  max-width: 1280px;
  margin: 0 auto;
  padding-top: var(--header-h);
  align-items: flex-start;
}

/* ---------- Sidebar TOC ---------- */
.sidebar {
  width: var(--sidebar-w);
  flex: none;
  position: sticky;
  top: var(--header-h);
  max-height: calc(100vh - var(--header-h));
  overflow-y: auto;
  padding: 22px 14px 40px 20px;
  font-family: var(--font-sans);
}
.sidebar h2.toc-heading {
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  color: var(--ink-300);
  font-weight: 700;
  margin: 0 0 10px 0;
  background: none;
  padding: 0;
  border-radius: 0;
}
.toc-part {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: #fff;
  background: var(--blue-700);
  padding: 5px 9px;
  border-radius: 3px;
  margin: 14px 0 6px 0;
}
.toc-part.p2 { background: var(--green-700); }
.sidebar ul { list-style: none; margin: 0 0 4px 0; padding: 0; }
.sidebar li { margin: 0; }
.sidebar a {
  display: block;
  font-size: 0.83rem;
  color: var(--ink-500);
  text-decoration: none;
  padding: 5px 8px;
  border-radius: 4px;
  border-left: 2px solid transparent;
}
.sidebar a:hover { background: var(--blue-100); color: var(--blue-700); }
.sidebar a.active {
  background: var(--blue-100);
  color: var(--blue-700);
  border-left-color: var(--blue-700);
  font-weight: 600;
}
.sidebar-note {
  font-size: 0.7rem;
  color: var(--ink-300);
  border-top: 1px solid var(--border);
  margin-top: 14px;
  padding-top: 10px;
  line-height: 1.6;
}

.sidebar-overlay { display: none; }

/* ---------- Main content ---------- */
main.content {
  flex: 1 1 auto;
  min-width: 0;
  background: var(--paper);
  margin: 0 0 40px 0;
  box-shadow: 0 0 0 1px var(--border);
}

.container {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 28px;
}

/* ---------- Hero (book cover) ---------- */
.hero {
  background: linear-gradient(180deg, var(--blue-900) 0%, var(--blue-700) 130%);
  color: #fff;
  padding: 56px 28px 46px 28px;
  text-align: center;
}
.hero-kicker {
  font-family: var(--font-sans);
  font-size: 0.82rem;
  letter-spacing: 0.34em;
  color: #a9c1da;
  margin-bottom: 18px;
}
.hero h1 {
  font-family: var(--font-sans);
  font-size: clamp(1.6rem, 4.4vw, 2.5rem);
  font-weight: 700;
  line-height: 1.4;
  margin: 0 0 14px 0;
}
.hero-sub {
  font-family: var(--font-sans);
  font-size: clamp(0.85rem, 2vw, 1rem);
  color: #cfe0ef;
  margin-bottom: 26px;
}
.hero-rule {
  width: 64px;
  height: 2px;
  background: var(--blue-300);
  margin: 0 auto 22px auto;
}
.hero-byline {
  font-family: var(--font-sans);
  text-align: center;
  margin: 0 auto 26px auto;
  max-width: 640px;
}
.hero-byline .hero-author {
  font-size: 0.92rem;
  font-weight: 600;
  color: #e5ecf4;
  line-height: 1.6;
}
.hero-byline .hero-date {
  font-size: 0.82rem;
  color: #a9c1da;
  margin-top: 5px;
  letter-spacing: 0.04em;
}
.hero-parts {
  display: grid;
  gap: 12px;
  max-width: 640px;
  margin: 0 auto 26px auto;
  text-align: left;
}
.hero-part {
  font-family: var(--font-sans);
  font-size: 0.86rem;
  font-weight: 600;
  background: rgba(255,255,255,0.08);
  border-left: 3px solid var(--blue-300);
  padding: 12px 14px;
  border-radius: 3px;
  line-height: 1.6;
}
.hero-part .pn { color: #bcd6ec; font-weight: 700; }
.hero-part .pd { display: block; font-weight: 400; font-size: 0.78rem; color: #cfe0ef; margin-top: 3px; }
a.hero-part {
  display: block;
  color: #fff;
  text-decoration: none;
  transition: background 0.15s ease, border-color 0.15s ease;
}
a.hero-part:hover, a.hero-part:focus {
  background: rgba(255,255,255,0.16);
  border-left-color: #fff;
}
#part1, #part2, #part3 { scroll-margin-top: calc(var(--header-h) + 14px); }
.hero-meta {
  font-family: var(--font-sans);
  font-size: 0.72rem;
  color: #b9c9da;
  line-height: 1.8;
  border-top: 1px solid rgba(255,255,255,0.2);
  padding-top: 14px;
  max-width: 640px;
  margin: 0 auto;
}

/* ---------- Part banners ---------- */
.part-banner {
  background: var(--blue-700);
  color: #fff;
  padding: 22px 28px;
  margin-top: 6px;
}
.part-banner.alt { background: var(--green-700); }
.part-banner .pb-num {
  font-family: var(--font-sans);
  font-size: 0.82rem;
  letter-spacing: 0.28em;
  opacity: 0.92;
}
.part-banner .pb-ttl {
  font-family: var(--font-sans);
  font-size: clamp(1.2rem, 3vw, 1.6rem);
  font-weight: 700;
  margin: 4px 0 8px 0;
}
.part-banner .pb-desc {
  font-family: var(--font-sans);
  font-size: 0.82rem;
  opacity: 0.95;
  line-height: 1.6;
  max-width: var(--maxw);
}

.part-body { padding: 8px 0 10px 0; }

/* ---------- Headings ---------- */
h2.chapter {
  font-family: var(--font-sans);
  font-size: 1.05rem;
  font-weight: 700;
  color: #fff;
  background: var(--blue-700);
  padding: 10px 14px;
  margin: 34px 0 14px 0;
  border-radius: 4px;
  scroll-margin-top: calc(var(--header-h) + 14px);
}
.part-body.p2 h2.chapter { background: var(--green-700); }

h3 {
  font-family: var(--font-sans);
  font-size: 0.96rem;
  font-weight: 700;
  color: var(--blue-700);
  border-left: 4px solid var(--blue-300);
  padding-left: 10px;
  margin: 22px 0 8px 0;
  scroll-margin-top: calc(var(--header-h) + 14px);
}
.part-body.p2 h3 { color: var(--green-700); border-left-color: var(--green-300); }

/* ---------- Callout boxes ---------- */
.abstract, .keybox {
  background: var(--blue-050);
  border: 1px solid var(--blue-line);
  border-left: 4px solid var(--blue-700);
  padding: 16px 18px;
  margin: 0 0 18px 0;
  border-radius: 0 4px 4px 0;
}
.abstract .lbl, .keybox .lbl {
  font-family: var(--font-sans);
  font-weight: 700;
  color: var(--blue-700);
  font-size: 0.82rem;
  display: block;
  margin-bottom: 6px;
  letter-spacing: 0.04em;
}
.note {
  background: var(--gold-bg);
  border: 1px solid #e7dcc2;
  border-left: 4px solid var(--gold-line);
  padding: 14px 16px;
  margin: 16px 0;
  border-radius: 0 4px 4px 0;
}
.note .lbl {
  font-family: var(--font-sans);
  font-weight: 700;
  color: var(--gold-ink);
  font-size: 0.82rem;
  display: block;
  margin-bottom: 5px;
}
.crit {
  background: var(--amber-bg);
  border: 1px solid #ecdcb6;
  border-left: 4px solid var(--amber-line);
  padding: 14px 16px;
  margin: 16px 0;
  border-radius: 0 4px 4px 0;
}
.crit .lbl {
  font-family: var(--font-sans);
  font-weight: 700;
  color: var(--amber-ink);
  font-size: 0.82rem;
  display: block;
  margin-bottom: 5px;
}
.crit .big {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 1.02rem;
  color: var(--amber-ink);
  display: inline-block;
  margin-bottom: 4px;
}
.caveat {
  background: var(--red-bg);
  border: 1px solid #e6c4c4;
  border-left: 4px solid var(--red-line);
  padding: 14px 16px;
  margin: 16px 0;
  border-radius: 0 4px 4px 0;
}
.caveat .lbl {
  font-family: var(--font-sans);
  font-weight: 700;
  color: var(--red-ink);
  font-size: 0.82rem;
  display: block;
  margin-bottom: 5px;
}

/* ---------- Tables ---------- */
.table-scroll {
  overflow-x: auto;
  margin: 10px 0 20px 0;
  border-radius: 4px;
  -webkit-overflow-scrolling: touch;
}
table {
  width: 100%;
  min-width: 560px;
  border-collapse: collapse;
  font-size: 0.85rem;
  line-height: 1.55;
}
caption {
  font-family: var(--font-sans);
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--ink-900);
  text-align: left;
  margin-bottom: 6px;
  caption-side: top;
}
th {
  background: var(--blue-500);
  color: #fff;
  font-family: var(--font-sans);
  font-weight: 600;
  text-align: left;
  padding: 8px 10px;
  border: 1px solid var(--blue-500);
  vertical-align: middle;
  white-space: nowrap;
}
.part-body.p2 th { background: var(--green-500); border-color: var(--green-500); }
td {
  padding: 8px 10px;
  border: 1px solid var(--border);
  vertical-align: top;
}
tbody tr:nth-child(even) td { background: var(--paper-alt); }
.t1 { background: var(--t1-bg) !important; font-weight: 700; }
.t2 { background: var(--t2-bg) !important; font-weight: 700; }
.t3 { background: var(--t3-bg) !important; font-weight: 700; }

/* ---------- Figures / maps / legend ---------- */
.mapfig {
  margin: 14px 0 22px 0;
  text-align: center;
  background: var(--paper-alt);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 14px;
}
.mapfig img { border-radius: 3px; margin: 0 auto; }
.mapfig figcaption {
  font-family: var(--font-sans);
  font-size: 0.76rem;
  color: var(--ink-300);
  text-align: left;
  margin-top: 10px;
  line-height: 1.6;
}
.legend {
  font-family: var(--font-sans);
  font-size: 0.76rem;
  margin: 10px 0 0 0;
  text-align: left;
  display: flex;
  flex-wrap: wrap;
  gap: 6px 14px;
}
.legend .lg { white-space: nowrap; display: inline-flex; align-items: center; }
.legend .sw {
  display: inline-block;
  width: 12px;
  height: 12px;
  border: 1px solid #999;
  margin-right: 5px;
  border-radius: 2px;
}

/* ---------- Misc ---------- */
.refs { font-size: 0.82rem; line-height: 1.6; }
.refs ol { padding-left: 1.6em; }
.refs li { margin-bottom: 0.5em; }
.small { font-size: 0.78rem; color: var(--ink-300); }
.tag {
  font-family: var(--font-sans);
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--blue-700);
}
.part-body.p2 .tag { color: var(--green-700); }
.cite {
  font-size: 0.7em;
  font-weight: 600;
  line-height: 0;
  white-space: nowrap;
  margin-left: 1px;
}
.cite a { color: var(--blue-700); text-decoration: none; }
.cite a:hover { text-decoration: underline; }
.part-body.p2 .cite a { color: var(--green-700); }
/* highlight a reference briefly when navigated to */
.refs ol li:target { background: #fff3cd; border-radius: 3px; }
.footnote-block {
  font-size: 0.78rem;
  color: var(--ink-300);
  margin-top: 20px;
  border-top: 1px solid var(--border);
  padding-top: 12px;
}

/* ---------- Colophon (奥付) ---------- */
.colophon {
  background: var(--blue-900);
  color: #dbe4ee;
  padding: 40px 28px 34px 28px;
  margin-top: 12px;
}
.colophon .container { max-width: var(--maxw); }
.colophon .colo-rule { height: 3px; background: var(--blue-300); width: 60px; margin-bottom: 18px; }
.colophon .colo-title {
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.28em;
  color: #fff;
  margin-bottom: 16px;
}
.colophon .colo-line {
  font-family: var(--font-sans);
  font-size: 0.82rem;
  line-height: 2;
  margin: 0 0 4px 0;
}
.colophon .colo-line strong { color: #bcd6ec; }
.colophon .colo-note {
  font-size: 0.75rem;
  color: #9fb0c2;
  line-height: 1.8;
  margin-top: 18px;
  border-top: 1px solid rgba(255,255,255,0.15);
  padding-top: 14px;
}

/* ---------- Back to top ---------- */
.back-to-top {
  position: fixed;
  right: 20px;
  bottom: 20px;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--blue-700);
  color: #fff;
  border: none;
  font-size: 1.1rem;
  cursor: pointer;
  box-shadow: 0 2px 10px rgba(0,0,0,0.25);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
  z-index: 150;
}
.back-to-top.visible { opacity: 1; pointer-events: auto; }

/* ---------- Responsive: tablet / mobile ---------- */
@media (max-width: 980px) {
  .sidebar { width: 240px; }
}

@media (max-width: 800px) {
  .nav-toggle { display: inline-flex; align-items: center; justify-content: center; }
  .layout { display: block; }
  .sidebar {
    position: fixed;
    top: var(--header-h);
    left: 0;
    bottom: 0;
    width: min(78vw, 300px);
    background: var(--paper);
    border-right: 1px solid var(--border);
    transform: translateX(-100%);
    transition: transform 0.22s ease;
    z-index: 210;
    box-shadow: 2px 0 14px rgba(0,0,0,0.15);
  }
  .sidebar.open { transform: translateX(0); }
  .sidebar-overlay {
    display: none;
    position: fixed;
    inset: var(--header-h) 0 0 0;
    background: rgba(10,16,24,0.4);
    z-index: 205;
  }
  .sidebar-overlay.open { display: block; }
  .container { padding: 0 18px; }
  .hero { padding: 40px 18px 34px 18px; }
  .part-banner { padding: 18px; }
  table { font-size: 0.8rem; }
}

@media (max-width: 480px) {
  .site-header .brand { font-size: 0.82rem; }
  .site-header .brand small { font-size: 0.62rem; }
  .print-btn span.label { display: none; }
  .print-btn { padding: 8px; }
  .lang-btn { padding: 6px 8px; font-size: 0.72rem; }
  .header-actions { gap: 7px; }
}

/* ---------- Print ---------- */
@media print {
  .site-header, .sidebar, .sidebar-overlay, .nav-toggle, .back-to-top, .print-btn, .lang-switch {
    display: none !important;
  }
  .layout { display: block; padding-top: 0; }
  main.content { box-shadow: none; margin: 0; }
  body { background: #fff; }
}

/* Part III theme (plum) — parallels the Part II (green) theme */
:root {
  --plum-700: #5a2b66;
  --plum-500: #743a80;
  --plum-300: #a87cb2;
}
.toc-part.p3 { background: var(--plum-700); }
.part-banner.alt2 { background: var(--plum-700); }
.part-body.p3 h2.chapter { background: var(--plum-700); }
.part-body.p3 h3 { color: var(--plum-700); border-left-color: var(--plum-300); }
.part-body.p3 th { background: var(--plum-500); border-color: var(--plum-500); }
.part-body.p3 .tag { color: var(--plum-700); }
.part-body.p3 .cite a { color: var(--plum-700); }

/* Summary — top-level panel spanning all three parts */
.exec-summary {
  margin: 24px 0 8px 0;
  padding: 22px 24px;
  background: var(--blue-050);
  border: 1px solid var(--blue-line);
  border-top: 4px solid var(--blue-700);
  border-radius: 4px;
}
.exec-title {
  font-family: var(--font-sans);
  font-size: 1.12rem;
  font-weight: 700;
  color: var(--blue-800);
  margin: 0 0 10px 0;
  letter-spacing: 0.03em;
}
.exec-lead { margin: 0 0 12px 0; }
.exec-points { margin: 0 0 16px 0; padding-left: 1.1em; }
.exec-points li { margin-bottom: 7px; }
.exec-threshold {
  background: var(--amber-bg);
  border: 1px solid #ecdcb6;
  border-left: 4px solid var(--amber-line);
  padding: 12px 15px;
  border-radius: 0 4px 4px 0;
}
.exec-threshold .lbl {
  font-family: var(--font-sans);
  font-weight: 700;
  color: var(--amber-ink);
  font-size: 0.82rem;
  display: block;
  margin-bottom: 5px;
}
.exec-threshold .big {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 1.0rem;
  color: var(--amber-ink);
  display: block;
  margin-bottom: 5px;
}
.exec-thr-note { font-size: 0.9rem; color: var(--ink-500); display: block; }

/* Appendix — abbreviations and list of figures/tables */
.appendix {
  margin: 26px 0 10px 0;
  padding: 20px 22px;
  background: var(--paper-alt);
  border: 1px solid var(--border);
  border-radius: 4px;
}
.appendix-title {
  font-family: var(--font-sans);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--ink-700);
  margin: 0 0 14px 0;
}
.appendix-grid { display: grid; grid-template-columns: 1fr; gap: 22px; }
.appendix-h {
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--ink-700);
  margin: 0 0 8px 0;
  border-bottom: 1px solid var(--border);
  padding-bottom: 4px;
}
dl.abbr { margin: 0; font-size: 0.88rem; display: grid; grid-template-columns: max-content 1fr; column-gap: 14px; row-gap: 5px; align-items: baseline; }
dl.abbr dt { font-weight: 700; color: var(--blue-700); font-family: var(--font-sans); margin: 0; white-space: nowrap; }
dl.abbr dd { margin: 0; color: var(--ink-500); }
ul.fig-list { margin: 0; padding-left: 1.1em; font-size: 0.88rem; }
ul.fig-list li { margin-bottom: 6px; }
@media (max-width: 800px) { .appendix-grid { grid-template-columns: 1fr; } }

/* 関連サイト（本文末尾・WetFieldEye への相互リンク） */
.related-site {
  max-width: var(--maxw);
  margin: 40px auto 8px;
  padding: 20px 24px;
  background: var(--blue-050);
  border: 1px solid var(--blue-line);
  border-left: 4px solid var(--blue-700);
  border-radius: var(--radius);
}
.related-site__label {
  margin: 0 0 6px;
  font-family: var(--font-sans);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--blue-700);
}
.related-site__text {
  margin: 0 0 10px;
  font-size: 0.92rem;
  line-height: 1.7;
  color: var(--ink-500);
}
.related-site__link { margin: 0; }
.related-site__link a {
  font-family: var(--font-sans);
  font-weight: 700;
  color: var(--blue-700);
  text-decoration: none;
}
.related-site__link a:hover { text-decoration: underline; }